Safety gas burner and valve



April 3, 1934- '.J. svAlcl-:R i 1,953,661v

vSAFETY GAS BURNER AND VALVE Filed May 29, 1930 Patented pr., 3, T1934 insita SAFETY GAS BURNER AND VALVE Joseph Svaicer, Chicago, Ill. y

ipplicationliay 29, 1930, Serial No. 4565836 7 Claims. (Cl. 158ll7.1)

This invention relates to a gas burner or rosette and more particularly to an auxiliary burn er attached thereto and also to the provision of an automatic valve coo-perable with said auxiliary burner. It is well known that each year many deaths are caused by asphyxiation due to accidental 'extinguishment of a gas flame, usually that of an ordinary gas stove because or substan tial or partial obstruction of the gas jet openings oi such stove. My invention has for its purpose 'the provision of means for eliminating the dangerstated and which frequently recurs whenever a vessel overboils when being heated over a gas ame.

An important object of my invention is the provision of a device attachable to a conventional gas burner which is adapted to emit a comparatively large gas ilame when the iiames of the gas rosette are partially or totally obstructed accidentally or are accidentally extinguished in order to release means normally holding the gas entrance valve in open position. A I

A further important object of the invention is the provision of a' spring pressed gas inlet valve and means attached thereto which normally hold the inlet valve in open position but which release said valve when heat is applied thereto.

A further object of the invention is the provision of an auxiliary burner comprising a housing having an inlet communicating with the gas source and two outlets, each o'f which normally emit a small Ailarne, said auxiliary burner being adapted to emit a comparatively large llame when the main gas burner llames are extingu'ished without a closure of the gas inlet.

A further important object of my invention is the provision of a gas burner for gas stoves comprising a main gas rosette, an auxiliary burner disposed upon and communicating with the interior of the main inlet pipe, and a self-closing gas inlet valve adapted to be released from nor malopen position by emission of a large flame byf said auxiliary burner.

Other and further important' objects of this invention will be apparent from the disclosures in the specification and the accompanying drawing. I

trated in the drawing described.

On the drawing: f Fig. 1 is a top plan view of a convention gas rosette, inlet pipe and its bell-shaped mouth, and showing my auxiliary safety burner .and valve control means.

and hereinafter more fully Fig. 2 is across-sectional side View in elevation showing the inlet valve. the `inlet valve control and the auxiliary burner disposed adjacent the bell-shaped mouthoi the gas" inlet.

Fig. 3 is View of my auxiliary burner taken 6)v from the bottom. V-

Fig. 4 is a side elevation, in cross section, of my self-closing valve land the control means therefor. l

Fig. 5 is a View taken from the left of Fig. 1 65 and showing the gasnlet valve-and closure plate from the inside.

As shown on the drawing :v4 A

The reference numeral 1 indicates a gas burner of conventional rosette'fornrhaving petal-like 70` portions only part oi which are shown in Fig.

l to form a rosette, Said gas burner l comprises a reduced "gas inlet portion 3 and an enlarged mouth portion loi the usual bell-shaped form'. The beibshaped mouth 4 has a slender opening 75' 5 extending from its enlarged portion to the ref duced portion 3 ofthe gas inlet. Within the gas inlet portion 3 is a nozzle 6 pointing in the direction'of the rosette burner, said nozzle 6 orming a DLV-pass for the incoming gas, the purpose of which will appear hereinafter. As is wellknown, the gas burner or jet openings become obstructed either totally or partiallyfthrough overboiling of liquids which are spilled upon the gas jet openings, and this has caused numerous fatal accidents due toescapement of gas through the' `iet openings or parts thereof which," though vobstructed by liquid, are sufficiently open to permit subsequent escape'lof gas. Y y

An auxiliary burner 7 comprising a slender 90 housing, a gas inlet pipe 8 integral therewith, a peripheral downwardly haring flange 9 and an inverted spout 10 is held disposed adjacent the by-pass of inlet pipe 3 by threaded engagement of thegas inlet pipe 8 with the threaded aper- 95 ture (not shown) in the wall of inlet pipe 3, as shownv in Fig. 2. Said auxiliary yburner 7 has a gas outlet 1l pointed in lthe direction of the rosette burner and an'inner rear gas outlet l2 opening to the inside surface of the downwardly laringflange 9. An aperture 13 is formedlin A'the iiange` 9 at a point nearest ther gas rosette. invention (in a preferred form) is illus- The auxiliary burner is made of such dimension so thatV the inverted spout 10 lies directly over the opening 5 Vin the bell-'shaped mouth portion i 105 andthe opposite end thereof is a short distance from the nearest naine of the gas rosette. The gas inlet pipe vv8 extends downwardly preferably at one side` of the auxiliary burner '7 sothat it will j not obstruct ignition andthe gasflame beneath llO the auxiliary burner, as will be explained hereinafter.

The mouth 4 of the gas burner 1 is closed by a double-walled closure plate 14 which carries turned edges 15 adapted to hook over ange 16 on the mouth portion 4 to secure said plate 14 thereto. The closure plate 14 has adjustable air inlet openings 17 thru which air is drawn to the entering the burners. Thruthecentral-opening in the closure plate 14 is a shorttube 18 which has internal threads and an enlarged head portion 19, the latter permitting convenient attachment thereof to the conventional nozzle fof a gas supply pipe.

Disposed within a second aperture in the closure plate i4 and adjacent the opening of .tube -18 is a ring 2o having a projecting stud 21 which is preferably grooved for the yreception .of a small ring. To the inner side of closure plate 14 .is secured an annular metal housing 22 for the purpose o1 protecting a coil spring `23 therein.

A clamp 24 encircles the 4pipe -18 and iS 'held thereon by a screw 25, said clamp :ha-ving `a Lpin 26 passing thru its upper portion and which also passes vthruthe aperture of stopper valve 27 and serves as a fulcrum therefor. The stopper valve 27 is arcular in-shapeand has a'flat inner face which. carries a round integral abutment adapted to snugly seat into the opening of tube 18 to close the same.

Slidably mounted within ring 20, .housing 22 and spring 23 is a connecting link r280i lmetal or the like which carries an annular flange adapted 4to bear against the end of spring 23. lSaid connecting link 28 has a bifurcatedend whichis pivoted to the upper portion of the stopper valve 27 by means of a pin passing thru said bifurcated end and thru an aperture in the stopper valve 27. The opposite end of connecting link 28 -is pivoted to a short lever 29, as shown in Fig. 4. which said lever is adapted to be movedto right angled. position to the connecting link 2S and -fulcrums -on .the shoulder of metal ring 20 in order to hold the .connecting link 28 against the action of coil spring 23, thereby normally holding the stopper valve 27 in open position. Lever 29 is normally held in its upward valve opening position and adjacent stud 21 (as shown in Fig. .27), Aby means of a ring 30 oi highly inflammable material.

The operation is as follows:

It will be apparent that-due to the pressure of the source of gas which enters nozzle 6 quickly a constant pressure of gas is maintained through restricted openings within the rosette .burner .although gas is constantly iiowing to the `ignited flames above the rosette. This reduced pressure causes gas to now from within the rosette into the space between nozzle 6 and the wall of the gas linlet 3 and into inlet pipe 8, auxiliary burner 7 and Iescape through outlets -11 and 12 of said burner. As soon as gas lbegins escaping from the outlet 11 and due to the proximity of said outlet to .the flames of the gas rosette, such gas .escaping from outlet 1l is ignited and asmall VAllame .will Abe maintained thereat. During the interval that this last' mentioned ignition has :been brought labout a portion .of the gas which enters lthe pipe 8 flows through l.the .U -shapedtunnel therein and escapes at outlet 12, and due =to the :buoyancy of the gas lills the space within the downwardly vextending annular llange '9 and .then roverilows said gas rising'due to lits buoyancy.

This gas which `so rises is immediately `ignited from the name burning at opening ,11 and due to the constant but restricted flow .of fgas rthrough outlet 12 a flame will remain burning at 12. This status is maintained constantly during normal consumption of gas by the flames of the gas rosette.

If the flames of the gas rosette are extinguished through obstruction of the rosette burner orices the draft or pull on the gas within the gas rosette is considerably reduced as is well known, thereby resulting in a greater pressure oi" gas within the gas rosette, such greater pressure causing considerably larger volume of gas to be forced through the restricted openings in 'the burner '7. This increased pressure also forces a large volume of mixed gas and air through slot 5, a portion of which flows within the space surrounded by the flange 9 Vof burner` '7 where it is immediately ignited by the flame at 12. Thereupon the entire space Vbeneath and within the burner 7 and above said slot is constantly ablaze due to the inilow of gas and air through slot 5 and through the restricted openings in the burner 7. of sufficient size that a portion thereof. particu- `larly that portion above the slot 5, burns the in- `ammable ring 30, thereby permitting the springA pressed stopper valve 27 to close quickly. After closure of the valve 27 the small amount of gas `within the gas inlet pipe which has passed the valve is consumed Aand the flames above the slot .and .about said auxiliary burner are extinguished.

In the operation of applicants device accidental extinguishment of a gas rosette occurs `in practically all cases by overow of water, coffee, soup or the like yfrom a container. Particles of the liquid food, whether it be water or other matter, always remain in the small holes of the gas rosette, thereby either partially or wholly obstructing the further llow of gas through the holes of said burner. The result is that due to the inux of the gas under pressure, the pressure in .the elongated inlet pipe formed integral with `the usual gas rosette will be increased. Because the holes-of the main. gas rosette are wholly or partially obstructed by the liquid any gas which may 4continue -to flow through the apertures of the main gas rosette will not be reignited by the flames of theauxiliary burner.

I .am aware that many changes may be -inade and numerous details of construction may be varied thru a wide range without departing from the principles of this invention, and I therefore .do not purpose limiting the .patent granted there- .on otherwise than necessitated by the prior art.

I claim as my invention: 1. In combination, a rosette having a plurality vof lgas jet openings, an inlet pipe having a side `opening therein and connecting said rosette with a gas source; a valve in said inlet pipe; a spring tending -to close said valve; an inflammable .link

.engaging said valve to hold the same in open position, obstruction of said gas jet openings operating to cause emission of gas and air through said .side opening; and an auxiliary burner mounted between said rosette and said side `open- -ing and communicating with the gas source, the llames of said auxiliary burner being positioned to ignite the gas when emitted from said opening to destroysaid link to permit said spring to close said valve.

2. In combination, a rosette having a .plurality of gas jet openings, an inlet pipe having a slotted `opening therein; a valve in said inlet pipe for controlling the gas supply; a spring tending to close said valve; an inilainmable link engaging said valve and for holding the same in open posi- This flame is A tion, the obstruction of said gas jet openings operating to cause emission of gas and air thru said Y slotted opening; and an auxiliary burner mounted between the main burner and said opening and communicating with the gas supply, said auxiliary burner being positioned to ignit the gas and air emitted from said opening todestroy said link to eifect closing of said valve.

3. A device of the class described comprising a rosette having a plurality of gas jet openings, an inlet pipe having a side opening therein and connecting said rosette with a gas source; a valve in said inlet pipe; a spring tending to close said valve; an inammable link engaging said valve to hold the same in open position, obstruction of said gas jet openings operating to cause emission of gas and air through said side opening; and an auxiliary burner having fuel outlet openings therein and mounted between said rosette and said side opening, the fuel emitted from said auxiliary burner being ignitible from the flame of said rosette and being adapted to ignite the fuel emitted f-rom said side opening to destroy said link.

4. In combination, a gas burner having a fuel outlet opening; a fuel inlet pipe connecting said burner and a fuel supply, said inlet pipe having a side opening therein;v a valve in said pipe; a

spring tending to close said valve; an iniiammable link engaging said valve to hold the same in open position, obstruction of said burner jet openings operating to cause emission of fuel from said side opening; and an auxiliary burner mounted between said first mentioned burner and said opening and communicating with the fuel supply and having openings therein, the fuel emitted from,

said openings being ignitible from said first mentioned burner, the flames of said auxiliary burner operating to ignite the gas fuel when emitted from said side opening to cause destruction of said link to effect closing of said valve.

5. In combination with a gas burner having fuel outlet openings, a pipe for connecting said gas burner with a gas source, said pipe having a side outlet port; an auxiliary burner mounted adjacent to said gas burner and communicating with the gas source andomprising an elongated body having a downwardly extending periphery and having gas outlet ports therein, one of said .outlet ports being adjacent the first mentioned gas burner fuel outlet openings and ignitible from the flames thereof and normally emitting a flame when said first mentioned gas burner is ignited; a gas inlet valve controlling the gas supply; a spring engaging said valve tending to close the same; an inflammable link adjacent said side outlet port and engaging said valve to hold the same open, the obstruction of the first mentioned gas burner outlet openings operating to emit gas through said outlet port and said auxiliary burner flame operating to ignite said gas emitting from said outlet port, and the flames of said outlet port operating to ignite and destroy said link, said link, when destroyed, permitting closing of said valve. f

6. In combination, a gas burner having a plurality of gas jet openings, an inlet pipe connecting said burner and a gas source and having a side port, a valve in said inlet pipe; a spring tending to close said valve; a link engaging said valve for holding the same open; an auxiliary burner mounted adjacent said gas burner and said link and having gas outlet ports therein communicating with a gas source, said auxiliary burner comprising a body having a horizontally extending flange for diverting ignited gas emitting therefrom, said auxiliary burner ames operating to ignite gas emitted from said side port whensaid rst mentioned gas burner is obstructed, said last mentioned ignited gas operating to ignite and destroy said link to effect closing of said valve. Y

7. A device of the class described comprising a gas conduit terminating in gas jet openings and' communicating with a gas source, said conduit having a' side port, an auxiliary burner communicating with said conduit and having gas jet openings and normally ignited simultaneously with said gas jet openings; a valve in said inlet pipe; yieldable means tending to close said valve; combustible and iniiammable means responsive to heat normallyholding said valve open, obstruction of said conduit jet opening causing emission of gas from said side port, the ignited gas of said auxiliary burner operating to ignite gas emitted 

